Signaling and telephoning apparatus.



Patented May 27, I902 E. L. GRAUEL. Q

SIGNALING AND TELEPHONING APPARATUS.

(Application filed Jan. 24, 1902.) (No Model.) 2 Sheats-$heet I mlk Patented May 27, I902.

' E. L. GRAUEL. SIGNALING AND TELEPHONING APPARATUS.

(Application filed Jan. 24, 1902.)

2 Sheets-$heet 2,

(No Model.)

NITFD STATES ATENT' OFFICE.

EDWIN L. GRAUEL, OF CARTIIAGE, NEW YORK.

SIGNALING AND TELEPHONING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 700,912, dated May 27, 1902.

Application filed January 24,1902. Serial No. 91,100. (No model.)

To (tZZ whom, it may concern:

Be it known that I, EDWIN L. GRAUEL, a citizen of the United States, residing at Carthage, in the county of Jefferson, State of New York, have invented certain new and useful Improvements in Signaling and Telephoning Apparatus; and I hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, in which Figure 1 is a perspective view of the apparatus for signaling combined with a telephone transmitter and receiver, including means for tapping the line-wire, portions of the magneto-box or generator-box broken away to show the generator and a condenser. Fig. 2 is an enlarged detail view of the tapping pole and reel, the sections of the pole separated and parts in section. Fig. 3 is a detached View of the receiver-hook, receiver, and receiver-lock. Fig. ais a diagram of the wiring of the apparatus.

Like symbols refer to like parts wherever they occur.

My invention relates to the construction of signaling apparatus for calling on telegraphlines by means of superposed currents and is especially designed for emergency work where it is not convenient or desirable to out into the line-wire.

To this end the main feature of my invention embraces the combination, in a signaling and telephoning apparatus, of a transmitter and its circuit, a receiver and its circuit having a condenser therein, a generator-circuit, and a means common to all for detachably connecting said circuits with the line-wire without impairing the integrity of said linewire, whereby a directintermittent or pulsating current may be sent as a call and telephonic communication thereafter established at any point on the line-wire.

There are other minor features of invention relating to certain details of construction, all as will hereinafter more fully appear.

I will now proceed to describe my invention more fully, so that others skilled in the art to which it appertains may apply the same.

In the drawings, Aindicates the backboard, A the magneto-box, T the transmitter, and R the receiver, of a telephone, which may be of the usual character, with battery B in the transmitter-circuit and with the usual wiring of the receiver-circuit excepting that a condenser (J is interposed in said circuit.

Within the magneto-box is any approved generator G for the production of a direct pulsating or intermittent current, the circuit therefrom being connected with the receivercircuit at a point outside the condenser C of the receiver-circuit.

From the point of connection or union of the receiver-circuit and generator-circuit (indicated at 1 on the diagram, Fig. 4) a wire 2 leads to reversely-wired spring-jacks .I, from which a second or return wire 3 leads back to the hook-switch I-I, whereby the usual telephone-circuits are opened and closed, andin addition thereto the generator circuit is closed when the receiver is on the hook and the generator G is in operation, the generator-circuit being normally open when the generator is not in operation (by reason of an automatic break g, Fig. 4, or otherwise) and also when the receiver is off the hook.

In order to avoid confusion, no attempt has been made to delineate in Fig. 1 of the drawings the precise wiring of the transmitter and receiver circuits, as the same, as well as how opened and closed by the receiver hookswitch, are well understood; but instead there of the principle of said wiring, as Well as the relation and connection of the generator-cir cuit,has been diagrammatically shownin Fig. 4 of the drawings, and reference thereto will enable any one skilled in the art to wire my combined telephone and signal apparatus.

J indicates the reversely-wired twin jack, with which the circuit-wires 2 and 3 are so connected that each wire connects with one plug K is in one of said wires being grounded, as at E,

of the spring-tongues a or a. and one plug while the other connects with the axle of a reel 6, journaled on the side of magnetobox A 6 indicates a reel journaled on the magnetobox and with which the reversely wired spring-jack J is velectrically connected, as before mentioned, said reel carrying any required length of flexible wire, one end of which is connected with the-journal of the reel 6 and the other provided with a plug (i for connection with a pole P, by means of which the line-wire is to be tapped. However, the connection may be made directly with the line-wire instead of intermediately of the pole P.

P indicates the tapping-pole, composed for convenience of carrying of a plurality of sectionspp 19 said sections tipped by ferrules or telescoping and locking sleeves P, which sleeves are electrically connected by wires 5, carried within the pole -sections. On the sleeve P of the first section 13 is a socket or plug-holder s to receive the plug 6 on the wire leading from the reel 6, and at the end of the final section 19 of the tappingpole P is a spring-clip S or equivalent means for engaging the line-wire.

The spring-clip S may be of any desired character, but is preferably so constructed that the adjacent or clamp faces which contact with the line-wire are roughened, (filefaces,) so that the line-wire will be scraped or cleaned when the connection is made and a perfect contact insured.

It will now be noted that the three circuits viz., the transmitter-circuit, the receiver-circuit, and the generator-circuitwhich are assembled in the apparatus are, as to the receiver and transmitter circuit, opened and closed by the receiver-hook switch in the usual manner, while the receiver-circuit and the generatorcircuit are also opened and closed by the receiver-hook switch, and the latter circuits are merged in a single circuit through the springjack, the plug, the reel, and reel-wire to the line-wire to be tapped.

As the apparatus is or may be of a portable size and character, it is desirable to control or lock the receiver in position when on the hook, and for said purpose I provide a spring-fork or forked spring locking-arm L, which may be secured to the magneto-box A or other suitable point on the apparatus. Furthermore, as in some instances it will be desirable to box the whole apparatus to prevent unauthorized use thereof, I prefer to so construct the joint of the transmitter-arm that it may be folded down on the magneto-box, and thus reduce the projection or depth of the apparatus.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination in a signaling and telephoning apparatus, of a receiver-circuit, a condenser interposed in the receiver-circuit, a generator-circuit, and means common to both circuits for detachably connecting said circuits with a telegraph-line wire withoutimpairing the integrity of said line-wire; substantially as and for the purposes specified.

2. The combination in asignaling and telephoning apparatus, of a transmitter-circuit, a receiver-circuit having a condenser interposed therein, a generator-circuit, and means common to all of said circuits for detachably connecting said circuits with a telegraph-line wire without impairing the integrity of said line-Wire; substantially as and for the purposes specified.

3. The combination in a signaling and telephoning apparatus, of a receiver-circuit hav ing a condenser interposed therein, a generator-circuit, means for merging said circuits in a single circuit adapted to connect said circuits with a telegraph-line, and a reel for reeling up said conmeeting-wire,substantially as and for the purposes specified.

4. In a signaling and telephoning apparatus, the combination of a transmitter-circuit, a receiver-circuit, and a generator-circuit, a receiver-hook having a hook-switch common to all of said circuits, a receiver, and a receiver-lock, whereby the receiver is held, and the common switch controlled when the re ceiver is in position on its hook, substantially as specified.

5. The combination with the transmittercircuit and the receiver-circuit, of a receiverhook having a hook-switch common to said circuits, a receiver, and a receiver-lock which holds the receiver and controls the hook and hook-switch when the receiver is in position on the hook, substantially as and for the purposes specified.

6. In a signaling and telephoning apparatus, the combination with signaling and telephoning circuits, of a single connection common to said circuits, and a circuit-pole provided with a snap or clamp adapted to electrically connect the same with a telegraphwire, substantially as and for the purposes specified.

In testimony whereof I aifix my signature, in presence of two witnesses, this 23d day of January, 1902.

EDWIN L. GRAUEL.

"Witnesses:

G. P. BITTER, EDWIN S. CLARKSON. 

